Vulnerability Monitor

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CVE-2013-7423

The send_dg function in resolv/res_send.c in GNU C Library (aka glibc or libc6) before 2.20 does not properly reuse file descriptors, which allows remote attackers to send DNS queries to unintended locations via a large number of requests that trigger a call to the getaddrinfo function.

Security Impact Summary

CVE-2013-7423 is a security vulnerability that . Impacting 4 products from redhat, from canonical, from opensuse and 1 other, organizations running these solutions should prioritize assessment and patching.

Historical Context

First disclosed in 2015, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.

Published

2015-02-24T15:59:00.050

Last Modified

2025-04-12T10:46:40.837

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 5.0 (MEDIUM)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:P/A:N

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: PARTIAL
Availability Impact: NONE

Exploitability Score

10.0

Impact Score

2.9

Weaknesses

Type: Primary
CWE-17

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	redhat	enterprise_linux_server_aus	6.5	Yes
Operating System	canonical	ubuntu_linux	10.04	Yes
Operating System	canonical	ubuntu_linux	12.04	Yes
Operating System	canonical	ubuntu_linux	14.04	Yes
Operating System	canonical	ubuntu_linux	14.10	Yes
Operating System	opensuse	opensuse	13.1	Yes
Operating System	opensuse	opensuse	13.2	Yes
Application	gnu	glibc	< 2.20	Yes

References

http://lists.opensuse.org/opensuse-updates/2015-02/msg00089.html Third Party Advisory ([email protected])
http://packetstormsecurity.com/files/164014/Moxa-Command-Injection-Cross-Site-Scripting-Vulnerable-Software.html ([email protected])
http://rhn.redhat.com/errata/RHSA-2015-0863.html ([email protected])
http://seclists.org/fulldisclosure/2021/Sep/0 ([email protected])
http://www.openwall.com/lists/oss-security/2015/01/28/20 Mailing List, Third Party Advisory ([email protected])
http://www.securityfocus.com/bid/72844 Third Party Advisory, VDB Entry ([email protected])
http://www.ubuntu.com/usn/USN-2519-1 Third Party Advisory ([email protected])
https://access.redhat.com/errata/RHSA-2016:1207 Third Party Advisory ([email protected])
https://github.com/golang/go/issues/6336 Third Party Advisory ([email protected])
https://security.gentoo.org/glsa/201602-02 Third Party Advisory ([email protected])
https://sourceware.org/bugzilla/show_bug.cgi?id=15946 Issue Tracking ([email protected])
http://lists.opensuse.org/opensuse-updates/2015-02/msg00089.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://packetstormsecurity.com/files/164014/Moxa-Command-Injection-Cross-Site-Scripting-Vulnerable-Software.html (af854a3a-2127-422b-91ae-364da2661108)
http://rhn.redhat.com/errata/RHSA-2015-0863.html (af854a3a-2127-422b-91ae-364da2661108)
http://seclists.org/fulldisclosure/2021/Sep/0 (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2015/01/28/20 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/72844 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://www.ubuntu.com/usn/USN-2519-1 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://access.redhat.com/errata/RHSA-2016:1207 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/golang/go/issues/6336 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.gentoo.org/glsa/201602-02 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://sourceware.org/bugzilla/show_bug.cgi?id=15946 Issue Tracking (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For redhat's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.